Gem Costs vs AH Pricing

Can anyone care to explain to me how people are selling Radiant Star gems at prices that don't make them a profit? Just crafting alone ends up being around 15.4 million gold, and I see Topaz and Amethyst going for 12.5million a piece. Even emerald and ruby, at 17million, don't end up with a profit with the 15% cut. So how are people selling so cheap? Am I missing something entirely that bypasses the crafting cost?